fissure bur

fis·sure bur

a cylindric or tapered rotary cutting tool intended for extending or widening fissures in a tooth, as for general surface reduction of tooth substance.

fis·sure bur

(fishŭr bŭr)
Cylindric or tapered rotary cutting tool used to extend or widen fissures in a tooth, as for general surface reduction of tooth substance.
References in periodicals archive ?
The coronal extent of the fusion was sectioned with a diamond fissure bur and air turbine prior to raising a minimal localised mucoperiosteal flap, buccally and palatally, to fully expose the double tooth (Figure 4a).
For decay removal I used a 1557 straight, roundended, cross-cut fissure bur (SS White) and confirmed the removal of all the decay and old alloy restoration.